def strStr(haystack: str, needle: str) -> int:
return haystack.find(needle)
print(strStr("hello","ll"))
print(strStr("hello","aab"))
print(strStr("hello",""))
def strStr(haystack: str, needle: str) -> int:
return haystack.find(needle)
print(strStr("hello","ll"))
print(strStr("hello","aab"))
print(strStr("hello",""))